/Engine/Source/Runtime/Engine/Classes/Components/InputComponent.h
Binds a delegate function to an Action defined in the project settings. Returned reference is only guaranteed to be valid until another action is bound.
template<class UserClass> [FInputActionBinding](API\Runtime\Engine\Components\FInputActionBinding) & BindAction ( const [FName](API\Runtime\Core\UObject\FName) ActionName, const EInputEvent KeyEvent, UserClass * Object, typename FInputActionHandlerSignature::TMethodPtr< UserClass > Func )